Please help, unable to import pool

[Thomymaster]

Hi All

I wanted to migrate from NAS4Free to Freenas. I installed FreeNAS on a USB stick and configured it.

First of all i tried to auto-import my zpool via the UI, but via "Auto Import Volume" a could not see my zpool in the drop-down list.

Next, on the CLI i did a "zfs import -f" (and ignored the message rewgarding the missing features and "zpool upgrade". Then i was able to see my zpool via "zfs status" but nothing was visible in the GUI.

I thought i'd restart, but after that i didn't see anything in the UI and via CLI i get:

Code:

[root@freenas] ~# zpool status
no pools available
[root@freenas] ~# zpool import
   pool: zpool1
     id: 13630764531810602312
  state: UNAVAIL
 status: One or more devices are missing from the system.
 action: The pool cannot be imported. Attach the missing
        devices and try again.
   see: http://illumos.org/msg/ZFS-8000-3C
 config:

        zpool1                    UNAVAIL  insufficient replicas
          mirror-0                UNAVAIL  insufficient replicas
            13073622451490040963  UNAVAIL  cannot open
            11085483439145696424  UNAVAIL  cannot open
          mirror-1                UNAVAIL  insufficient replicas
            3522156715239461660   UNAVAIL  cannot open
            427873776284066062    UNAVAIL  cannot open
[root@freenas] ~#

What can i do now to import my pool? The mirror-0 vdev consisted of /dev/ada0 /dev/ada1 and the mirror-1 vdev of /dev/ada2 and /dev/ada3

Please help me :(


Cheers

Thomy

 

[Yatti420]

That probably wasn't a good idea to migrate a nas4free pool.. Certainly not to force the matter.. I'm not sure if you will be able to recover.. You will have to wait for somebody with more recovery expertise..

 

[cyberjock]

Oh boy.. I sure hope you have backups...

 

[Thomymaster]

What can i do now? Can somebody help me? There must be a way to import the zpool with the device names i.e. /dev/ada0 /dev/ada1....

 

[cyberjock]

Yeah... that sucker isn't going to import without some magic pixie dust or something. UNAVAIL means "you are f*****".

Trying to do an import with -f was incredibly stupid. That's not something you willy-nilly do. It's a "hail-mary" pass. It will either work, or it'll make things MUCH MUCH worse.

I offer recovery services.. moving data from a damaged pool to another box right now... But I can't guarantee anything.

 

[Thomymaster]

OK than i have learned that a NAS4Free to FreeNAS migration doesn't work. Luckily i have a backup (my backup server which holds the data in HW-RAID6). So i can create the zpool again, but here comes the next problem (see another post).

 

[cyberjock]

Please don't take my comment that -f was stupid as a personal attack. -f is a very dangerous game. Most people see the -f parameter in the manpage and think "oh goody! this is what I need!" but it's not. It's playing with fire most of the time. :(

 

[Thomymaster]

Yeas no problem :)

I just thought there would be a method to solve this problem with the "UNAVAIL" devices.

Take it as a lesson learned not to go from NAS4Free to FreeNAS, and don't try to do -f unless you are REALLY sure you want to do it.

 

[cyberjock]

Not easily. I've fixed one pool that had all UNAVAIL devices. But it took me like 10 hours to figure it out.

If you have a backup I'd just wipe the disks, create your pool on FreeNAS and do a restore from backup.

 

[Thomymaster]

Yes, i did that :)